As a result, the magazine says, Delhi’s roads became less clogged and air pollution dropped by 13 per cent (Delhi Government claimed the drop was by 20-22 per cent).

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Some are wondering why PM Narendra Modi, who was ranked 5th last year, is not in the list. A hint can be found in Fortune’s own criteria of selection of the world’s greatest leaders.

“Anyone who has been ranked previously must requalify each year with new achievements…We recognize those who are inspiring others to act, to follow them on a worthy quest, and who have shown staying power.”

The magazine says that these are the exact reasons why US President Barack Obama or any of the latest presidential candidates are on the list.